Find whether a given integer is a power of 3 or not | C # program to check if a number is power of 3 or not . ; Returns true if n is power of 3 , else false ; The maximum power of 3 value that integer can hold is 1162261467 ( 3 ^ 19 ) . ; Driver code
using System ; public class GFG { static bool check ( int n ) { if ( n <= 0 ) return false ; return 1162261467 % n == 0 ; } public static void Main ( ) { int n = 9 ; if ( check ( n ) ) Console . Write ( " Yes " ) ; else Console . Write ( " No " ) ; } }